Just one day after launching a public beta of the operating system, Apple has released a "Supplemental Update" for OS X El Capitan, fixing a bug that could cause some 32-bit apps to crash.

The update is available to both public beta testers and people with the third developer beta, which was seeded on Wednesday. Either version can be downloaded through the Mac App Store's Updates tab.

El Capitan users can also download a minor update to the OS' "Samantha" voice, improving clarity and pronunciation.

Because El Capitan is still in a pre-release phase, it's wise to make backups before trying the beta and avoid using it on mission-critical Macs.

The final version of the OS should launch for free sometime this fall. The software is mostly a refinement of Yosemite, but does include new features and refinements such as Split View, performance boosts, expanded search functions, pinned Safari tabs, and an easier incarnation of Mission Control.